/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.wuneng.commonlibrary.hardware.bluetooth;

import android.annotation.SuppressLint;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.os.Handler;
import android.util.Log;

import com.wuneng.commonlibrary.R;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;

/**
 * This class does all the work for setting up and managing Bluetooth
 * connections with other devices. It has a thread that listens for incoming
 * connections, a thread for connecting with a device, and a thread for
 * performing data transmissions when connected.
 */
@SuppressLint("NewApi")
public class BluetoothConnect {
    public boolean running = true;
    // Debugging
    private static final String TAG = "BluetoothConnect";
    private static final boolean D = true;

    // Name for the SDP record when creating server socket
    private static final String NAME = "tdbt";

    // Unique UUID for this application
    // private static final UUID MY_UUID =
    // UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
    private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
    // Member fields
    private final BluetoothAdapter mAdapter;
    //private final Handler mHandler = null;
    private AcceptThread mAcceptThread;
    private ConnectThread mConnectThread;
    private ConnectedThread mConnectedThread;
    private Context context;
    private CariBluetoothCallBack cariBluetoothCallBack;
    /**
     * Constructor. Prepares a new Main session.
     *
     * @param context
     * The UI Activity Context
     * @param handler
     * A Handler to send messages back to the UI Activity
     */

    public static final int MESSAGE_STATE_CHANGE = 1;
    public static final int MESSAGE_READ = 2;
    public static final int MESSAGE_WRITE = 3;
    public static final int MESSAGE_DEVICE_NAME = 4;
    public static final int MESSAGE_TOAST = 5;
    public static final String TOAST = "toast";
    public static final String DEVICE_NAME = "devicename";

    public BluetoothConnect(Context context, Handler handler) {
        mAdapter = BluetoothAdapter.getDefaultAdapter();
        //mHandler = handler;
    }

    public BluetoothConnect(Context context) {
        this.context = context;
        mAdapter = BluetoothAdapter.getDefaultAdapter();

    }

    public BluetoothConnect(Context context, CariBluetoothCallBack cariBluetoothCallBack) {
        this.context = context;
        this.cariBluetoothCallBack = cariBluetoothCallBack;
        mAdapter = BluetoothAdapter.getDefaultAdapter();
    }

    /**
     * Start the chat service. Specifically start AcceptThread to begin a
     * session in listening (server) mode. Called by the Activity onResume()
     */
    public synchronized void start() {
        if (D)
            Log.d(TAG, "start");
        running = true;
        // Cancel any thread attempting to make a connection
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }

        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }

        // Start the thread to listen on a BluetoothServerSocket
        if (mAcceptThread == null) {
            mAcceptThread = new AcceptThread();
            mAcceptThread.start();
        }
    }

    /**
     * Start the ConnectThread to initiate a connection to a remote device.
     *
     * @param device The BluetoothDevice to connect
     */
    public synchronized void connect(BluetoothDevice device) {
        if (D)
            Log.d(TAG, "connect to: " + device);
        running = true;
        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }

        // Start the thread to connect with the given device
        mConnectThread = new ConnectThread(device);
        mConnectThread.start();
    }

    /**
     * Start the ConnectedThread to begin managing a Bluetooth connection
     *
     * @param socket The BluetoothSocket on which the connection was made
     * @param device The BluetoothDevice that has been connected
     */
    public synchronized void connected(BluetoothSocket socket, BluetoothDevice device) {
        if (D)
            Log.d(TAG, "connected");
        running = true;
        // Cancel the thread that completed the connection
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }

        // Cancel any thread currently running a connection
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }

        // Cancel the accept thread because we only want to connect to one
        // device
        if (mAcceptThread != null) {
            mAcceptThread.cancel();
            mAcceptThread = null;
        }

        // Start the thread to manage the connection and perform transmissions
        mConnectedThread = new ConnectedThread(socket);
        mConnectedThread.start();

//        Message msg = mHandler.obtainMessage(MESSAGE_DEVICE_NAME);
//        Bundle bundle = new Bundle();
//        bundle.putString(DEVICE_NAME, device.getName());
//        msg.setData(bundle);
//        mHandler.sendMessage(msg);
    }

    /**
     * Stop all threads
     */
    public synchronized void stop() {
        if (D)
            Log.d(TAG, "stop");
        running = false;
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }
        if (mConnectedThread != null) {
            mConnectedThread.cancel();
            mConnectedThread = null;
        }
        if (mAcceptThread != null) {
            mAcceptThread.cancel();
            mAcceptThread = null;
        }
    }

    /**
     * Write to the ConnectedThread in an unsynchronized manner
     *
     * @param out The bytes to write
     * @see ConnectedThread#write(byte[])
     */
    public void write(byte[] out) {
        // Create temporary object
        ConnectedThread r;
        // Synchronize a copy of the ConnectedThread
        synchronized (this) {
            r = mConnectedThread;

        }
        // Perform the write unsynchronized
        r.write(out);
    }

    /**
     * Indicate that the connection attempt failed and notify the UI Activity.
     */
    private void connectionFailed() {
        // Send a failure message back to the Activity
        running = false;
//        Message msg = mHandler.obtainMessage(MESSAGE_TOAST);
//        Bundle bundle = new Bundle();
//        bundle.putString(TOAST, "connectionFailed");
//        msg.setData(bundle);
//        mHandler.sendMessage(msg);
    }

    /**
     * Indicate that the connection was lost and notify the UI Activity.
     */
    private void connectionLost() {

        // Send a failure message back to the Activity
        running = false;
//        Message msg = mHandler.obtainMessage(MESSAGE_TOAST);
////        Bundle bundle = new Bundle();
////        bundle.putString(TOAST, "connectionLost");
////        msg.setData(bundle);
////        mHandler.sendMessage(msg);
    }

    /**
     * This thread runs while listening for incoming connections. It behaves
     * like a server-side client. It runs until a connection is accepted (or
     * until cancelled).
     */
    private class AcceptThread extends Thread {
        // The local server socket
        private final BluetoothServerSocket mmServerSocket;

        public AcceptThread() {
            BluetoothServerSocket tmp = null;
            // Create a new listening server socket
            try {
                tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
            } catch (IOException e) {
                Log.e(TAG, "listen() failed", e);
            }
            mmServerSocket = tmp;
        }

        public void run() {
            if (D)
                Log.d(TAG, "BEGIN mAcceptThread" + this);
            setName("AcceptThread");
            BluetoothSocket socket = null;
            // Listen to the server socket if we're not connected
            try {
                // This is a blocking call and will only return on a
                // successful connection or an exception
                socket = mmServerSocket.accept();
            } catch (IOException e) {
                Log.e(TAG, "accept() failed", e);
            }

            // If a connection was accepted
            if (socket != null)
                connected(socket, socket.getRemoteDevice());
            if (D)
                Log.i(TAG, "END mAcceptThread");
        }

        public void cancel() {
            if (D)
                Log.d(TAG, "cancel " + this);
            try {
                mmServerSocket.close();
            } catch (IOException e) {
                Log.e(TAG, "close() of server failed", e);
            }
        }
    }

    /**
     * This thread runs while attempting to make an outgoing connection with a
     * device. It runs straight through; the connection either succeeds or
     * fails.
     */
    private class ConnectThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final BluetoothDevice mmDevice;

        public ConnectThread(BluetoothDevice device) {
            mmDevice = device;
            BluetoothSocket tmp = null;
            // Get a BluetoothSocket for a connection with the
            // given BluetoothDevice
            try {
                tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
            } catch (IOException e) {
                Log.e(TAG, "create() failed", e);
            }
            mmSocket = tmp;
        }

        public void run() {
            Log.i(TAG, "BEGIN mConnectThread");
            setName("ConnectThread");

            // Always cancel discovery because it will slow down a connection
            // mAdapter.cancelDiscovery();

            // Make a connection to the BluetoothSocket
            try {
                // This is a blocking call and will only return on a
                // successful connection or an exception

                if (mmSocket.isConnected())
                    mmSocket.close();
                mmSocket.connect();
                running = true;
            } catch (Exception e) {
                connectionFailed();
                Log.i(TAG, e.getMessage());
                // Close the socket
                try {
                    mmSocket.close();
                } catch (IOException e2) {
                    Log.e(TAG, "unable to close() socket during connection failure", e2);
                    return;
                }
                return;
            }

            // Reset the ConnectThread because we're done
            synchronized (BluetoothConnect.this) {
                mConnectThread = null;
            }

            // Start the connected thread
            connected(mmSocket, mmDevice);
        }

        public void cancel() {
            try {
                mmSocket.close();
            } catch (IOException e) {
                Log.e(TAG, "close() of connect socket failed", e);
            }
        }
    }

    /**
     * This thread runs during a connection with a remote device. It handles all
     * incoming and outgoing transmissions.
     */
    private class ConnectedThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final InputStream mmInStream;
        private final OutputStream mmOutStream;

        public ConnectedThread(BluetoothSocket socket) {
            Log.d(TAG, "create ConnectedThread");
            mmSocket = socket;
            InputStream tmpIn = null;
            OutputStream tmpOut = null;

            // Get the BluetoothSocket input and output streams
            try {
                tmpIn = socket.getInputStream();
                tmpOut = socket.getOutputStream();
            } catch (IOException e) {
                Log.e(TAG, "temp sockets not created", e);
            }

            mmInStream = tmpIn;
            mmOutStream = tmpOut;
        }

        public void run() {
            Log.i(TAG, "BEGIN mConnectedThread");
            byte[] buffer = new byte[1024];
            int bytes;
            // Keep listening to the InputStream while connected
            // while (mmSocket.isConnected()) {
            while (running) {
                try {
                    // Read from the InputStream
                    if (mmInStream.available() > 0 == false) {
                        continue;
                    } else {
                        Thread.sleep(200);
                    }
                    if ((bytes = mmInStream.read(buffer)) > 0) {
                        byte[] buf_data = new byte[bytes];

                        for (int i = 0; i < bytes; i++) {
                            buf_data[i] = buffer[i];
                        }
                        // Send the obtained bytes to the UI Activity
                        String message = PDAManager.bytesToHexString(buf_data);
                        if(cariBluetoothCallBack!=null){
                            cariBluetoothCallBack.onDataReceive(message);
                        }

                       // Map<String,String> data = PDAManager.parserData(message,context, R.array.Ch4Items);
                        //mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buf_data).sendToTarget();
                    }

                } catch (IOException e) {
                    Log.e(TAG, "disconnected", e);
                    connectionLost();
                    break;
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }

        /**
         * Write to the connected OutStream.
         *
         * @param buffer The bytes to write
         */
        public void write(byte[] buffer) {
            try {
                mmOutStream.write(buffer);

                // Share the sent message back to the UI Activity
               // mHandler.obtainMessage(MESSAGE_WRITE, -1, -1, buffer).sendToTarget();
            } catch (IOException e) {
                Log.e(TAG, "Exception during write", e);
            }
        }

        public void cancel() {
            try {
                running = false;
                mmSocket.close();
            } catch (IOException e) {
                Log.e(TAG, "close() of connect socket failed", e);
            }
        }

    }

}
